I was raised on the Texas-Mexico border and it's been around for as long as I can remember. Even though I used to go to Mexico by myself in high school to shop, I never wandered too far from the main streets. Unfortunately, it's not safe to do that anymore because of the drug cartels.
Mexico has become a VERY dangerous place and it's devestated those who relied on tourism or even local shopping trade. It's made even more people financially dependant on the very criminals who caused the problem, the drug cartels, and they have been sacrificing people for years, but more people there now live in fear.
It's such a shame, because most people in Mexico are decent. It's always been corrupt, but the drug cartels have gotten so greedy they no longer seem to need to rely on the government to look the other way. They'll just kill whoever gets in their way.
Does anyone remember the Texas college students that went missing and were found to be victims of this in the 80's (or early 90's)? It wasn't shocking news to those of us who lived on the border, but I remember it prompted a national fear of spring break travel to Mexico for several years.